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The response of the visual system when driving a car in real conditions and in a simulator during a parallel motor task.
Čiháková, Lucie ; Jelen, Karel (advisor) ; Lopot, František (referee)
Work title: The response of the visual system when driving a car in real conditions and in a simulator during a parallel motor task. Aims: To implement a laboratory measurement in a driving simulator and in real conditions during a parallel motor task. To track the response of the visual system during the task and to determine potential differences in the response of the visual system and in the speed in the simulator and in the real car environment. Methods: The laboratory measurement was realized in a driving simulator OCTAVIA II. The measurement in real conditions was realized in Škoda Octavia as well. The eye-tracking method was used to track the drivers` eyes. Results: In the simulator the more experienced driver managed to do the parallel motor task within a shorter period of time than the less experienced driver, lower frequency of looks at the radio during the tasks with the more experienced driver was not proved. There was not an evidence of more balanced speed during the drive with the more experienced driver in the simulator. On the average the driver spent shorter time doing the tasks in the real environment than in the simulator and the total number of looks at the radio was lower. The speed of the drive in the real environment was lower than the speed in the simulator. Key words:...
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The image of Helen
Chlupáčová, Edita ; Rytíř, Jaroslav (advisor) ; Fischerová, Sylva (referee)
The thesis describes a corpus of Greek archaic and classic poetic texts, where Helen and her eidōlon appear next to each other. As for the methodology, the thesis took its shape in the frame of French classical philology and structuralism. It is shown that the concept of eidōlon in several ways opens up the question of re-production, both biologic and poetic. As a sign, the eidōlon signifies an oscilation between a speech sign and an image, which poses the question of time and space. The singularity of the concept of eidōlon is being related to the present by comparison with photography as conceived by Roland Barthes. The thesis examines potency of the chosen methodology in relation to its object, therefore by simulation it examines how it is possible to write about the Greeks today and how Roland Barthes wrote about the Greeks, from which follows the search for possibilities of application of Barthes'concepts of studium, punctum, mathesis singularis. Subthesis is a proposition that Barthes' Camera Lucida is in dialogue with Plato's Phaedrus.
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DSS for energy saving of potential clients
Škrobánková, Jana ; Mildeová, Stanislava (advisor) ; Kašparová, Dana (referee)
This diploma thesis focuses on a model-oriented system for decision support. The main contribution of the thesis consists in creating a system simulating energy saving which would result from the purchase of plastic windows and/or of a heat pump. The basis of the simulator is a functional model consisting of individual variables and connections between them and created in compliance with relevant notation. The thesis describes and illustrates not only the model structure itself, but, in the same time, also its logic on which basis the corresponding energetic saving is calculated after entry of necessary initial values. The diploma thesis includes, in addition to the model, also the description and the graphical representation of the created user interface which provides the user with easy entry of parameters and clear display of results. The introductory part of this work introduces the basic theoretical terms and approaches concerning the system dynamics together with its principles. The following part is dedicated to the description of the enterprise for which the system for decision support was created. The final part contains the above mentioned model, its structure and description, as well as the created user interface.
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Bridge and Analysis of the Bridge Play
Pražma, Jan ; Forstová, Lenka (referee) ; Ježek, Pavel (advisor)
The goal of this thesis is to create two programmes: The bridge card game Simulator and the bridge bidding system Editor. The thesis describes the characteristics of both programmes as well as the correct usage of the Editor in order to create userdefined bidding system. From the programmer's point of view, the thesis in detail describes the chosen data-structures and the chosen algorithmical solution. Simultaneously we discuss the possibilities of further extensions and upgrades. The work also briefly speaks about the problematic of bridge play, describes the solutions used in commercial bridge products and summarizes the most common ways of implementing the bridge play.
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Genetic Algorithm Design for Distribution Network Outfits Optimalization
Ondruš, Tomáš ; Skala, Petr (referee) ; Paar, Martin (advisor)
The work deals with genetic algorithms and their potential use in application software to optimize high voltage switching elements of distribution network. Theoretical part explains the basic concepts of genetic algorithms such as a gene, population and chromosome and basic principles of the development of genetic algorithms.. The main task of the thesis is to design the algorithm that will simulate the distribution of the sectionalizers by telecontrolled section switches or reclosers and analyze how to set the the parameters affecting the convergence speed of genetic algorithm. The basic parameters affecting the convergence of breeding, mutation probability, population size or using of elitism. The second goal is finding a suitable set of input parameters for the selected population sizes without and with using elitism. The results of the work determine the most appropriate settings for each generation and determining the approximate number of generations needed to find the best solution. The genetic algorithm applocation was tested on a less extensive distribution network with six switching elements
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Effect of simulated eutrophication on primary production of a floodplin wetland
HAŠEK, Ladislav
Annotation This thesis is part of the project GA CR No 526/09/1546 (?Importace of newly assimilated carbon to the interaction of plants with soil in grassland and wetland ecosystems in varying environmental conditions?). The main intention of this work is to determine the aboveground production of a wetland stand of Hamerské louky in the Třeboň Basin Protected Landscape and Biosphere Reserve and to evaluate the effects of mineral fertiliser on its production and plant species composition. The aboveground biomass was harvested on four sampling dates. On 30. 5, 27. 6 and 27. 8, biomass samples were sorted into species while on 26. 10. samples were not sorted. On each date, the aboveground biomass was harvested from three plots within each of the three fertilization treatments. Two replicate samples of an area of 0,125 m2. The biomass values were converted to an area of 1 m2. The studied plots were assigned to three treatments with a different application of mineral fertiliser doses: treatment with high intensity of fetilization included 300 kg NPK. ha-2, treatment with low intensity of fertilization included 65 kg NPK. ha-2 and treatment without fertilization 0 kg NPK. ha-2. The highest total average aboveground biomass was detected on the last sampling date for all treatments. The values were 733,6 g.. m-2 for the treament with high intensity of fertilization, 592,9 g. m-2 for the treatment wtih low intensity of fertilization and 629,7 g.m-2 for the treatment without fertiization. Interestingly, high fertiliser dose inhibited the production of mosses.
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Simulation of tools coating
Jílek, Jan ; Kára, Jan (advisor) ; Lidický, Bernard (referee)
Autor: Jan Ji'lek Katcdra: Katcdra aplikovanc matemaliky Vedouci bakalafske prace: RNDr. Jan Kara, Ph.D. e-mail vedouciho: Jan.KaratVnn ff.cuni.cz Abstrakl: Je dana povlakovaci komora, ve ktere je rolujiei system rotujicich drzaku, ktcrc drzi rotujici nastroje. Dale jsou v koinofe umisteny clcktrody (z ruznyeh matcrialu), zc kterych se odpafuje material a nanasi sc na nastroje. C'ilem prace je simulovat proccs nanaseni a co ncjvcrohodneji graficky zobrazit nanesenou vrstvu na danych mistceh povlakovanych nastroju v zavislosti na jejich umistcni, umisteni a poctu elektrod, rychlosti otaccni soustavy a umisteni ruznych stinidel. Title: Simulation of tools coating Author: Jan Jilek Department: Department of Applied Mathematics Supervisor: RNDr. Jan Kara, Ph.D. Abstract: In the given coating chamber is a system of rotating holders, which hold rotating tools. The chamber also contains electrode (of various materials), from which the material evaporates and is coating the tools. The goal of the thesis is lo simulate the process of coating and visualize the resulting layer in given places of coated tools depending on their placement, number of electrodes, speed of rotation and placement of various shades. - 4 -
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Antenna for microwave beacon on X-band
Zamazal, Bořivoj ; Pokorný, Michal (referee) ; Kasal, Miroslav (advisor)
This bachelor’s thesis describes an antenna design for microwave beacon in 10 GHz band. In the first section of the work, the possible solutions are presented and a slot antenna, constructed from commercially available waveguide, is chosen. In the second section, the principle of this antenna is described and the dimensions for the chosen frequency and the type of waveguide are calculated. In the third section, the antenna model is built and simulated in the Ansof HFSS environment in accordance with theoretically calculated dimensions and, based on these simulations, two possible versions of antenna are created.
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Linear semiflexible polyelectrolytes in solutions
Bačová, Petra ; Limpouchová, Zuzana (advisor) ; Lísal, Martin (referee)
Title: Linear semiflexible polyelectrolytes in solutions Author: Petra Bačová Department: Faculty of Science, Charles University in Prague Supervisor: Doc. Ing. Zuzana Limpouchová, CSc. Supervisor's e-mail address: zl@vivien.natur.cuni.cz Consultant: Mgr. Peter Košovan, PhD. Abstract: In this thesis I used the Molecular dynamics simulations for study of charged polymers (polyelectrolytes) and their behaviour in solutions. Wide range of polyelectrolytes are se- miflexible and in contrast to neutral polymers it is possible to influence their stiffness by changing the properties of solution as for example ionic strength. The chain flexibility may be characterized by the persistence length. Thesis explains how to express the persistence length from orientational correlation function which shows the double exponential decay. Two contributions to chain stiffness are discussed and the interest is concentrated around electrostatic persistence length which seems to be scale dependent. An effect of added salt on the chain conformation is studied. Salt is treated implicitly within the Debye-Hückel approximation. The results are confronted with OSF theory and the conclusions of vari- ational calculations of Maghi and Netz. The presented thesis describes the conformational behaviour of polyelectrolytes in salty solutions,...
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Derivative Pricing Using Monte Carlo Simulations
Burešová, Jana ; Witzany, Jiří (advisor) ; Málek, Jiří (referee)
Pricing of more complex derivatives is very often based on Monte Carlo simulations. Estimates given by these simulations are derived from thousands of scenarions for the underlying asset price developement. These estimates can be more precise in case of higher number of scenarions or in case of modifications of a simulation mentioned in this master thesis. First part of the thesis includes theoretic description of variance reduction techniques, second part consists of implementation of all techniques in pricing a barrier option and of their comparison. We conclude the thesis by two statements. The former one says that usage of each technique is subject to simulation specifics, the latter one recommends to use MC simulations even in the case a closed-form formula was derived.
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